Bosch AL9405X Alternator

Reliable Remanufactured Alternator for BMW Models

The Bosch AL9405X Alternator (Remanufactured) is designed to provide dependable electrical charging and starting performance for select BMW vehicles. Engineered to meet OEM specifications, this 12-volt alternator ensures consistent power delivery and efficient operation for your BMW 325Ci, 325i, 330i, 525i, and Z3 models.

• 12-volt electrical system compatibility
• Internal fan type with external fan included for optimal cooling
• Clockwise rotation direction
• Includes pulley with 6 grooves and 50mm outside diameter
• Internal regulator type with external regulator included
• Aluminum case material and color for durability and heat dissipation
• 90-amp amperage rating suitable for standard BMW electrical loads
• Plug type 335 with 2 plug clock rear view main mounting ears at 6 o'clock
• Remanufactured to meet Bosch Alternator (Remanufactured) product line standards

Detailed Alternator Features and Specifications

This Bosch AL9405X alternator features a robust aluminum case that provides strength and effective heat dissipation, essential for maintaining performance under demanding conditions. The internal fan design, complemented by an included external fan, ensures efficient cooling to prevent overheating during operation. The alternator rotates clockwise and includes a 6-groove pulley with a 50mm outside diameter, compatible with 6s belt types commonly used in BMW vehicles. The internal regulator type is supported by an external regulator included with the unit, enhancing voltage regulation and electrical system stability. With a 90-amp rating, this alternator supports the electrical demands of BMW 3 Series and 5 Series models, including the 325Ci, 325i, 330i, 525i, 530i, and Z3.

About the Bosch Alternator (Remanufactured) Product Line

The Bosch Alternator (Remanufactured) line offers remanufactured alternators that meet strict quality and performance standards. Each unit undergoes comprehensive testing and refurbishment to restore functionality comparable to new parts. This product line focuses on providing reliable, cost-effective alternatives to new alternators while maintaining Bosch’s commitment to durability and fitment accuracy. The AL9405X is part of this line, ensuring compatibility and performance for BMW electrical systems.

Common Applications and Issues Addressed

• Replacement for failing or weak alternators in BMW 325Ci, 325i, 330i, 525i, 530i, and Z3 models
• Resolves battery charging problems and electrical system malfunctions
• Addresses dimming headlights and electrical accessory failures
• Fixes warning lights related to charging system faults
• Restores proper voltage regulation and engine starting reliability

Installation Notes and Tips

• Ensure compatibility with your specific BMW model and engine configuration before installation
• Disconnect the battery prior to removal and installation to prevent electrical shorts
• Verify pulley alignment and belt tension after installation to avoid premature wear
• Check all electrical connections and mounting points for secure fitment
• Consult vehicle service manual for torque specifications and installation procedures

Quality Assurance and Warranty Information

This Bosch AL9405X alternator is remanufactured to meet OEM standards and undergoes rigorous testing to ensure reliable performance. The aluminum case and internal components are inspected and refurbished to provide durability and consistent operation. While specific warranty details may vary, Bosch remanufactured alternators typically include a limited warranty covering defects in materials and workmanship. Refer to the product documentation for exact warranty terms.